Sodium Nitrate in Agriculture 1) Properties: White Crystal, easily soluble in water. 2) Purity: 99.5%Min. Formula: NaNO3. Formula:NaNO3M.W.:84.99(According to Intermational Atomic Weight in 1995) The product accords with the National Standard of GB4553-93 Registration number:SC 07 Items1st gradeSome items are superior to the National StandardNaNO3(on bry base),%99.5minChlorides(as CL,on bry base ...